@note: Each section is an attribute of the waServiceConfig object and is a dictionary of option names (key) and value.
Additionally each section dictionary has a special key “default” that is a boolean variable indicating if the section
is set in the default or specific service configuration file.

The input parameter can be af differents types:
1. A String that can be handled by postgresql (see Time Zone at http://www.postgresql.org/docs/current/static/sql-set.html)
2. An integer, for instance -7. The time zone 7 hours west from UTC (equivalent to PDT / -07:00). Positive values are east from UTC.
3. A datetime with timezone information

@param user: user name used to authenticate
@param password: password used to authenticate
@param dbname: the database name (only in dsn string)
@param host: database host address
@param port: onnection port number (optional - defaults to 5432)
@param service: service name that correspond with associated database schema (optional)
@return: L{True} if connection could be estabished and the schema found (only if schema is provided)